Add sections to the bookbuilder: Ydinvoima ja kohtalo (Tyhjä joukko)


With complex structures, e.g., a chapter with subsections, selecting only the chapter is likely to select only the chapter's title, so probably you want to select the chapter and all its subsections.

The text structure is shown below.

Title, author, date...
Ydinvoima ja kohtalo
Source, notes...